PDF malware analysis — malicious · 2adbb6b0eea56e3a

MALICIOUS

PDF

44.2 KB Created: 2021-05-11 09:06:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e934ebfe7b5969a5343111762babcb90 SHA-1: 5158fbfe6e6fbca1ee2e1acc1ca119a5e34d0b4a SHA-256: 2adbb6b0eea56e3a221fa1a15dd517609d558ef545f19064f77258942a6d7805

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9976

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://netcdn.xyz/app/406889139/how-to-get-free-coins-on-coin-master-iphone-game-hack PDF link annotation
- https://corbo.ru/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-wheel_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/instant-robux_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/free-roebucks_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
- https://corbo.ru/images/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://corbo.ru/images/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
- https://corbo.ru/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://corbo.ru/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c07.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C07	27492 bytes
SHA-256: `fd0b0f4f3c054f0c18ba935b79b41f6ed96ec104050aaf841440db6158e8fa5c`
`font_01_sfnt_off00008ad5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AD5	18216 bytes
SHA-256: `52b69b82d5fd4984e757fd003bc67bfee1f038f463e2c352f44a6d97427109ad`

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